#6C51BF
Closest named color: Iris (#6258C4). oklch(52% 0.165 290.8), rgb(108, 81, 191).
Aa
White text reads best on this color (5.88:1).
About this color
#6C51BF is a medium-dark, vivid purple. In OKLCH its lightness is 52%, its chroma 0.165 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.022 away. White text reads best on it, at 5.88:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.165) |
| Temperature | in between |
| Nearest name | Iris (#6258C4) |
| Black text | 3.56:1 |
| White text | 5.88:1 |
Values
| HEX | #6C51BF |
| RGB | rgb(108, 81, 191) |
| HSL | hsl(255, 46%, 53%) |
| OKLCH | oklch(52% 0.165 290.8) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #6C51BF | 5.88:1 | AA | Lc -84.4 | Fine for body text |
| Black text on #6C51BF | 3.56:1 | AA large text | Lc 24.9 | Dividers and decoration only |
| #6C51BF text on white | 5.88:1 | AA | Lc 79.1 | Fine for body text |
| #6C51BF text on black | 3.56:1 | AA large text | Lc -22.7 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 700.
-
Step 50
50
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#E9E8F9
oklch(93.7% 0.023 288.7)
-
Step 200
200
#D8D5F5
oklch(88.5% 0.044 289.8)
-
Step 300
300
#C0B8F1
oklch(80.9% 0.08 290.9)
-
Step 400
400
#A191EA
oklch(70.6% 0.128 291)
-
Step 500
500
#8B73E3
oklch(63% 0.164 290.8)
-
Step 600
600
#7759D1
oklch(55.6% 0.177 291)
-
Step 700
700 (this color)
#6C51BF
oklch(52% 0.165 290.8)
-
Step 800
800
#513C93
oklch(42.7% 0.137 290.5)
-
Step 900
900
#433475
oklch(37.7% 0.107 291)
-
Step 950
950
#271F45
oklch(27% 0.069 290.8)
#6C51BF with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #0966C3 | 0.102 |
| Deuteranopia (no green cones) | #1462BD | 0.098 |
| Tritanopia (no blue cones) | #546980 | 0.134 |
| Achromatopsia (no color) | #646464 | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6C51BF
#6C51BF
oklch(52% 0.165 290.8)
- #6D6E00
#6D6E00
oklch(52% 0.114 110.4)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #6C51BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.022
- Slate Blue #6A5ACD ΔE 0.029
- Light Indigo #6D5ACF ΔE 0.031
- Dark Periwinkle #665FD1 ΔE 0.041
- Bluey Purple #6241C7 ΔE 0.043
- Warm Blue #4B57DB ΔE 0.065
- Blue With A Hint Of Purple #533CC6 ΔE 0.067
- Deep Lavender #8D5EB7 ΔE 0.070
Use #6C51BF in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.